Presence of Mind

Damaging an enemy champion restores 6-50 (80% for ranged) mana or 6 energy. Takedowns restore 15% of your maximum mana or energy. Cooldown for damage restoration: 8s

Tree

Precision

Row

Row 1

In short

Restore a small amount of mana or energy when damaging an enemy champion. Takedowns restore mana or energy.

Patch

16.16.1